サンエイ List of Products and Services

At Sun-Ei Co., Ltd., we offer custom-made screws tailored to specific products and specifications for applications such as construction, machine tools, transportation machinery, industrial machinery, and chemical plants. If you have any special screws that cannot be obtained commercially, please feel free to consult us. "Special clamp screws" are screws used for securing items such as clamps and vises. Metric screws and trapezoidal screws are used. We can accommodate shapes according to your application. For more details, please contact us or refer to our catalog.

• Joints between components

At Sun-Ei Co., Ltd., we offer custom-made screws tailored to specific products and specifications for applications such as construction, machine tools, transportation machinery, industrial machinery, and chemical plants. If you have any special screws that are not available on the market, please feel free to consult with us. "Special Adjuster Bolts" are bolts used for height adjustment (adjustment bolts) and horizontal stability in industrial and office equipment. We accommodate custom orders. For more details, please contact us or refer to our catalog.

• Joints between components

At Sun-Ei Co., Ltd., we offer custom-made screws tailored to specific products and specifications for applications such as construction, machine tools, transportation machinery, industrial machinery, and chemical plants. If you have any special screws that cannot be obtained commercially, please feel free to consult us. "Special cover bolts" are bolts used for the installation of protective covers and inspection covers. We will manufacture them according to the size required. For more details, please contact us or refer to our catalog.

• Joints between components

At Sun-Ei Co., Ltd., we offer custom-made screws tailored to specific products and specifications for applications such as construction, machine tools, transportation machinery, industrial machinery, and chemical plants. If you have any special screws that are not available on the market, please feel free to consult us. "Special Low-Head Bolts" are effective when you want to minimize the protrusion of the screw head. They fit neatly in a compact space. We can accommodate sizes M8 and above. For more details, please contact us or refer to our catalog.

• Joints between components

At Sun-Ei Co., Ltd., we offer custom-made screws tailored to specific products and specifications for applications such as construction, machine tools, transportation machinery, industrial machinery, and chemical plants. If you have any special screws that are not available on the market, please feel free to consult us. "Special lead screws" are screws used in machine tools and positioning applications, designed for the linear movement of machine parts. Trapezoidal screws are commonly used, and we can also accommodate two-start screws (multi-start screws). For more details, please contact us or refer to our catalog.

• Joints between components

At Sun-Ei Co., Ltd., we offer custom-made screws tailored to specific products and specifications for applications such as construction, machine tools, transportation machinery, industrial machinery, and chemical plants. If you have any special screws that are not available on the market, please feel free to consult us. The "special hexagonal pillar" is used for joints, adjustments, and raising. By changing the internal and external threads, it can also be used as a size conversion joint. We can accommodate long screws that are difficult to obtain commercially, as well as high nuts with internal threads only. For more details, please contact us or refer to our catalog.

• Joints between components

At Sun-Ei Co., Ltd., we offer custom-made screws tailored to specific products and specifications for applications such as construction, machine tools, transportation machinery, industrial machinery, and chemical plants. If you have any special screws that cannot be obtained commercially, please feel free to consult us. "Special pipe screws" are used for connections in pipes and fluid machinery, and the pitch is finely specified to ensure the strength of the joints. There are pipe parallel screws (G) for mechanical connections and pipe tapered screws (R) for sealing purposes. We also accommodate American National Pipe Thread (NPT) with a thread angle of 60 degrees. For more details, please contact us or refer to our catalog.

• Joints between components

At Sun-Ei Co., Ltd., we offer custom-made screws tailored to specific products and specifications for applications such as construction, machine tools, transportation machinery, industrial machinery, and chemical plants. If you have any special screws that cannot be obtained commercially, please feel free to consult us. The "special air hole bolt" is used in vacuum devices when gas release is necessary, featuring a through hole to allow air to escape between the main body of the device and the screw. We can accommodate both modifications of commercially available bolts and custom manufacturing. We can also produce long bolts. For more details, please contact us or refer to our catalog.

• Joints between components

At Sun-Ei Co., Ltd., we offer custom-made screws tailored to specific products and specifications for applications such as construction, machine tools, transportation machinery, industrial machinery, and chemical plants. If you have any special screws that are not available on the market, please feel free to consult with us about anything. There are various types and methods for "screw loosening prevention," and Sun-Ei accommodates individual specifications as well. For more details, please contact us for consultation. For further information, please inquire or refer to our catalog.

• Joints between components

At Sun-Ei Co., Ltd., we offer custom-made screws tailored to specific products and specifications for applications such as construction, machine tools, transportation machinery, industrial machinery, and chemical plants. If you have any special screws that are not available on the market, please feel free to consult us about anything. The "special eccentric bolt" has an eccentric head and screw section, making it effective as a clamp due to the wedge action of the cam. We can accommodate requests for shapes that make the head easier to grip, among other specifications. For more details, please contact us or refer to our catalog.

• Joints between components

At Sun-Ei Co., Ltd., we offer custom-made screws tailored to specific products and specifications for applications such as construction, machine tools, transportation machinery, industrial machinery, and chemical plants. If you have any special screws that are not available on the market, please feel free to consult us. "Special left-hand screws" are used in rotating bodies such as electric motors to prevent loosening by being installed in right-hand rotating applications. They are commonly used as fan blade fixing screws and motor shaft securing screws. Please consult us when considering production. For more details, please contact us or refer to our catalog.

• Joints between components

At Sun-Ei Co., Ltd., we offer custom-made screws tailored to specific products and specifications for applications such as construction, machine tools, transportation machinery, industrial machinery, and chemical plants. If you have any special screws that are not available on the market, please feel free to consult us. "Special inch screws" are screws measured in inches, with thread angles of Unified screws (60°) and Whitworth screws (55°). Unified screws are categorized into coarse (UNC) and fine (UNF) threads based on pitch intervals. As they adhere to international standards, they are commonly used in imported goods, plumbing fixtures, and construction-related applications. Please consult us when considering production. For more details, please contact us or refer to our catalog.

• Joints between components

At Sun-Ei Co., Ltd., we offer custom-made screws tailored to specific products and specifications for applications such as construction, machine tools, transportation machinery, industrial machinery, and chemical plants. If you have any special screws that are not available on the market, please feel free to consult us about anything. "Special anti-drop screws" are used in applications where doors need to be secured and frequently tightened or loosened. They do not fall off when loosened, making them convenient as they cannot be lost. We can accommodate both modifications from commercially available bolts and custom manufacturing. For more details, please contact us or refer to our catalog.

• Joints between components

At Sun-Ei Co., Ltd., we offer custom-made screws tailored to specific products and specifications for applications such as construction, machine tools, transportation machinery, industrial machinery, and chemical plants. If you have any special screws that are not available on the market, please feel free to consult us. "Special plugs" are used as caps or spring retainers for piping, hydraulic equipment, and pneumatic equipment. They come in various shapes, including those with flanges or grooves for O-rings. We can accommodate your desired specifications regarding materials and heat treatment. For more details, please contact us or refer to our catalog.

• Joints between components
• Prime movers, torque converters, hydraulic equipment, generators

At Sun-Ei Co., Ltd., we offer custom-made screws tailored to specific products and specifications for applications such as construction, machine tools, transportation machinery, industrial machinery, and chemical plants. If you have any special screws that cannot be obtained commercially, please feel free to consult us. "Special fine screws" are small screws with a nominal diameter of about 1 to 2 mm, used in electronic devices, precision machinery, watches, and more. We can manufacture from M1.0 and can accommodate specifications such as drilling holes in the center or milling the head as required. For more details, please contact us or refer to our catalog.

• Joints between components

At Sun-Ei Co., Ltd., we offer custom-made screws tailored to specific products and specifications for applications such as construction, machine tools, transportation machinery, industrial machinery, and chemical plants. If you have any special screws that are not available on the market, please feel free to consult us. "Special Reamer Bolts" are used for fitting into reamed holes for preventing displacement and for positioning. We can accommodate the fit of the shaft according to the diameter of the reamer hole (bolt hole), so please consult us. The head can also be customized to specifications such as hexagonal, round, hexagonal socket, and knurled. For more details, please contact us or refer to our catalog.

• Joints between components

San-Ei has established a diverse and small-lot production system for special screws, providing comprehensive support for equipment parts. 【Examples of Production】 ■Special Reamer Bolts These are used for fitting into reamed holes to prevent misalignment and for positioning. We can accommodate the fit of the shaft according to the reamed hole specifications, so please feel free to consult us. The head can also be customized to hexagonal, round, hexagonal hole, knurled, and other specifications. *For more details, please download the catalog or contact us.

• others

"San-Ei," which manufactures and sells special screws in Osaka, offers a completely custom-made service that produces special screws tailored to specific products and specifications, such as screw parts not available on the market, long bolts, and bolts with internal threads. [Processing Examples] - Head shape processing (oval shape/knurled) - Hole processing in the head (hexagonal/hexalobular) - Eccentric processing - Head painting - Polishing processing - Welding - Through hole processing - Tapping processing [Recommended for the following people!] - Those who need special screws that cannot be obtained commercially - Those who require screws for specific products or specifications in construction, machine tools, transportation machinery, industrial machinery, chemical plants, etc. - Cases where materials or surface treatments are needed according to environmental conditions, such as improving strength, corrosion resistance, and wear resistance. For more details, please download the catalog or contact us.

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**Four Points of San-Ei** ○ One-stop service / Providing solutions to solve issues → Upon request, we will respond to your needs from drafting to material procurement, processing, surface treatment, joining, and assembly. ○ Trading company × Manufacturer functions / Response to a variety of situations → We handle joining processes and assembly in-house, allowing us to respond to various scenarios. ○ Short delivery times / Speedy delivery through numerous partner manufacturers → We work with over a hundred partner manufacturers, enabling us to respond immediately from prototypes to mass production. ○ Overseas research / Cost reduction with Japanese quality → By collaborating with our office in Vietnam, we assist in cost reduction while maintaining Japanese quality. For more details, please download the catalog or contact us.

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